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单词 kyanite
释义

kyanite


ky·a·nite

K0121000 (kī′ə-nīt′) also cy·a·nite (sī′ə-)n. A bluish-green to colorless mineral, Al2SiO5, used as a refractory.
[Greek kuanos, dark blue enamel + -ite.]

kyanite

(ˈkaɪəˌnaɪt) or

cyanite

n (Minerals) a grey, green, or blue mineral consisting of aluminium silicate in triclinic crystalline form. It occurs in metamorphic rocks and is used as a refractory. Formula AL2SiO5 kyanitic adj

ky•a•nite

(ˈkaɪ əˌnaɪt)

also cyanite



n. a mineral, aluminum silicate, Al2SiO5, occurring in bluish bladed crystals or in masses, used as a refractory. [1785–95; < Greek kýan(os) blue enamel (see cyano-1) + -ite1]
Thesaurus
Noun1.kyanite - a grey or greenish-blue mineral consisting of aluminum silicate in crystalline formkyanite - a grey or greenish-blue mineral consisting of aluminum silicate in crystalline form; occurs in metaphoric rock, used as a refractorycyanitemineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Translations
cianite

Kyanite


kyanite

[′kī·ə‚nīt] (mineralogy) Al2SiO5 A blue or light-green neosilicate mineral; crystallizes in the triclinic system, and luster is vitreous to pearly; occurs in long, thin bladed crystals and crystalline aggregates. Also known as cyanite; disthene; sappare.

Kyanite

 

(also called disthene), a silicate mineral with the chemical composition Al2[SiO4]O. Kyanite contains up to 63.1 percent Al2O3 and sometimes up to 2 percent admixtures of iron oxide or chromium oxide. It crystallizes in the triclinic system, forming long columnar or tabular crystals and their aggregates. Its color ranges from greenish blue to dark blue-green and yellow; sometimes it is colorless. The mineral is characterized by a sharp anisotrophy in hardness. In the direction parallel to the length of the crystal the hardness equals 4.5, and in the direction at right angles, it is up to 7.5. The density ranges from 3,560 to 3,680 kg/m3. Kyanite is formed with the plutonic metamorphism of clay-rich sedimentary rocks; it is also encountered in quartz veins and contact zones of pegmatites. It is used as a valuable high-alumina raw material for refractory and acidresistant articles and for spark plug insulators for internal combustion engines.

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